Influence of Multi-Line of Fuel Injection (LPG) in Secondary Zone of Tubular Combustion Chamber of Micro Gas turbine

Abstract

Experimentalinvestigationof high performance and low emission colorless combustion ina micro gas turbine tubular combustor with multi-line of fuel injection located in secondary zonecarried out at the atmospheric conditions, colorless oxidation reaction is characterized by dispersedhomogenies flame and high uniformity of average temperature inside the combustion chamber.System performance, emission gases,the flame capturing photo, measurements of temperature, inlet air mass flow rate andgasfuel LPG flow ratefor variableof fuel lines mass fraction F2/F1 are recorded at low emission colorless combustion condition. for 3.2 g/s of fuel flow rate with6 holes and 1mm main injector holes diameter and 8 holes with 0.8mm diameter for secondary line of fuel injection,concluded that maximal air mass flow rate, with choked fuel flow in the main injector for each cases promotes the formation of colorless distributed pal blue flamecombustion, with great effects for the equivalence ratio on the average temperature to limiting cooled flame quenching generation, desirable pattern factor < 0.28, increasing in combustion efficiency up to 99.68%, and decreasing in specific fuel consumption with rising of power generation.